I thought Ortiz got hurt late in spring training. Agreed Covey probably makes it if he's healthy and so is Walker but it wasn't a sure thing, especially if Turnbull had refused his option.
At this point it hardly matters, they'll all get a chance to soak up some innings, and I guess several of them (Ruiz, Covey, Turnbull, Walker, Phillips) are competing for the playoff spot Lorenzen took last year. In theory Banks is firmly the #6 because he's left-handed. Walker was the #8 last year and of course didn't get in a game. I presume in the first round they will still carry an extra hitter.